Gledam nekaj 850 EVO 500gb i onda naletim na jedan komentar u vezi tog diska sa newegga..
Sad je pitanje kolko ima istine u tom komentaru il tip nije kompetentan za prikaz stvarnog stanja odnosno mogucnosti samog ssd diska...
Pros: Specs on paper are good, especially the 4k random read (single queue), which is essential for fast desktop performance. 5 years warranty also sound good.
Cons: I bought this 850 EVO to replace an aging 840 EVO SSD, which had horrible drops in performance despite the newest firmware. HDtune read rate on the old 840 was very uneven and maybe as lows as 10% of what it should be, so the new 850 EVO should be much better, right? Yes, it was better, but not as good as other new SSDs. I tested the 850 EVO drive with both AS-SSD and HDtune, once after writing it half full of data, and once after a secure erase. After I had copied over 250GB of data via disk imaging, the performance of the 850 EVO in HDtune was uneven, showing a significant drop (maybe 50%) in read rate when reading the logical blocks with freshly written data, and full speed only on the empty portions of the HDD. Next, I did a secure erase and tested again - this time, the read rate was good across the entire (all empty) disk. Note, however, when I tested a BX100 and some other recent SSDs, they were able to maintain the same full performance read speed in HDtune regardless of whether they were full of data or freshly secure erased. Basically, the EVO will slow down once you write actual data to it. This was a huge problem for the 840 EVO, and while the issue has been improved with the 850 EVO, the slowdown issue is still not completely gone. And this is fresh out of the box! Basically, I don't trust any TLC drives anymore, and I am returning my 850 EVO to NewEgg after this find.
What make matters worse is Samsung's really bad RMA process, which you need to utilize once you are out of exchange privileges with NewEgg. I am trying to have my 840 EVO exchanged through Samsung, but RMA for Samsung SSDs goes through a 3rd party company. Samsung's own RMA website (they call it XRA) is broken when you hit the submit button. Instead, you need to find the 3rd party company totalts.com which is difficult to locate to begin with, and which hasn't responded in a week. NewEgg is very helpful with its support, but Samsung's 5 year warranty is useless if you can't actually reach anyone to exercise it. So now I don't trust Samsung's SSD, TLC memory in general, and Samsung's RMA process in particular. Buyer beware.
Other Thoughts: The serious performance slowdown issue of the 840-nonpro, 840-EVO, and possibly 850-EVO should really be handled with a recall program. They tried to fix it with firmware, but it doesn't work. I wouldn't be surprised to see this issue turn into a class action.